#slogan {  
    .left;
    width: 620px; 
    padding-top: 20px;  

    label {
        font-family: app_intro;
        font-size: 28pt;
        font-weight: normal;
        line-height: 60px;
        color: @white;
    }

    .app-welcome {
        background-size: 540px 260px;
        background-repeat: no-repeat;
        margin-top: 35px;
        height: 260px;
    }
}

#introduce {
    .header {  
        width: 100%;  
        height: 250px;        
        margin-top: 10px;   
        padding-top: 20px;
        p {
            font-size:35pt;
            font-family: serif;
        }         
    }
}